Research on Measurement Method of 3D Motion Image Attitude Parameters of College Football Players

Jialing Jiang

Arts Sports Department, Sichuan University of Media and Communications, Chengdu, 611745, China

Abstract: To study the accurate measurement of three-dimensional image attitude parameters in athletes' movement, using traditional three-dimensional motion image modeling using fixed constraint model research method, it was difficult to describe dynamic small-area image changes. As a result, the measurement effect on image attitude parameters was poor. The research on image attitude parameter measurement method based on MIAS3D system was proposed. The MIAS3D system was used to reconstruct the three-dimensional coordinates, the minimum motion function value was solved, and the first-order Newton iterative method was integrated to deal with the large-scale parameter optimization problem. According to the first-order Newton iteration point list, the three-dimensional coordinate system of the motion image was constructed, and the parameters were measured according to the reconstruction result. The projection error method of minimizing the image sequence was used to obtain the motion parameter and structure parameter matrix of the athlete during the three-dimensional motion process, and finally the accurate analysis of the three-dimensional motion parameters

could be completed. The experimental results showed that the highest research effect of this method could reach 96%, which provided an important basis for the study of athletes' motion characteristics.

Keywords: College football player; Three-dimensional motion image; Action posture; Parameter measurement; Action parameter